Science celebrates a golden anniversary

Has it really been half a century since James D. Watson and Francis Crick announced to the world their discovery of the structure of DNA? Their breakthrough in the spring of 1953 was unquestionably one of the great milestones in the history of science. Crick famously (and forgivably) bragged in a local pub that he and Watson had discovered the "secret of life," but even he would never have...